From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755129AbbAOSzt (ORCPT ); Thu, 15 Jan 2015 13:55:49 -0500 Received: from mail-qa0-f51.google.com ([209.85.216.51]:50789 "EHLO mail-qa0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751981AbbAOSzr (ORCPT ); Thu, 15 Jan 2015 13:55:47 -0500 Date: Thu, 15 Jan 2015 13:55:43 -0500 From: Tejun Heo To: Konstantin Khebnikov Cc: linux-mm@kvack.org, cgroups@vger.kernel.org, Roman Gushchin , Jan Kara , Dave Chinner , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, koct9i@gmail.com Subject: Re: [PATCH 3/6] memcg: track shared inodes with dirty pages Message-ID: <20150115185543.GA28195@htj.dyndns.org> References: <20150115180242.10450.92.stgit@buzz> <20150115184914.10450.51964.stgit@buzz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150115184914.10450.51964.stgit@buzz> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 15, 2015 at 09:49:14PM +0300, Konstantin Khebnikov wrote: > From: Konstantin Khlebnikov > > Inode is owned only by one memory cgroup, but if it's shared it might > contain pages from multiple cgroups. This patch detects this situation > in memory reclaiemer and marks dirty inode with flag I_DIRTY_SHARED > which is cleared only when data is completely written. Memcg writeback > always writes such inodes. > > Signed-off-by: Konstantin Khlebnikov This conflicts with the writeback cgroup support patchset which will solve the writeback and memcg problem a lot more comprehensively. http://lkml.kernel.org/g/1420579582-8516-1-git-send-email-tj@kernel.org Thanks. -- tejun